Feeding mechanism for sewing-machines.



No. 889,076. I PATENTED DEC. 18, 1906.

L. ONDERDONKQ FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY 21, 1901.

3 SHEETS-SHEET 1.

Q vi tweooe/a I I I 51 00 11 z W w W N9. 839,076: PATENT D DEG. 18,1906.

L. ONDEEDONK. I

FEEDING MECHANISM FOR. SEWING MACHINES.

I APPI IOATION FILED MAY 21, 1901.

3 SHEETSSHBET 2 K015590761 PATENTED BB 18, 1906.

, L. ONDERDONK. FEEDING MEGHANISMFOR SEWING MACHINES.

APPLICATION IILED MAY 21, 1901.

3 SHEETS-SHEET 3 -1 M Q 'm l nun-mm lg a -i 'fji/ H W fl; 7

UNITED STATES PATENT OFFICE.

LANSING ONDERDONK. OF NEW YORK, N. Y., ASSIGNOR TO UNION SPECIAL SEWINGMACHINE CO, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLIN OIS.

FEEDING MECHANISM FOR SEWIPiGw-lVlltGl -llN ESn To all whom it mayconcern:

Be it known that I, LANSING ONDERnoNK, a Citizen of the United States, residing at New York, in the county of New X ork, State of New York, haveinvented certain new and useful Improvements in Feeding Mechanism forSewingMachines, of which the following is a description, refereneebeinghad to the accompanying drawings and to the letters of reference markedthereon.

My invention relates to an improvement in sewing-machines, andparticularly to a feeding mechanism therefor, the object being primarilyto provide a feeding mechanism for post and post-cylinder machines ofthe type illustrated in my application for Letters Patent, filed. ofeven date herewith, Serial The inven tion consists in the various 1nat'ters hereinafter described and referred to in the appended claims.

In the accompanying drawings, which illustrate the invention, Figure 1is a plan view ofa sewing-machine illustrating my invention, portionsbeing removed. Fig. 2 is a side elevation, the tubular bed-plate lacingin longitudinal vertical section. Fig. 3 is a transverse verticalsection on the line 3 3 of Fig. 2.

' Fig. 4- is a front elevation of the main-feedliar-operating lever. F 5and 6 are front and side elevations of the auxiliary-l'eed-baroperatinglever. Fig. 7 shows in detail the eccentrics for actuating the said twolovers;

- nd Fig. 8 is a detail perspective view of the.

ieed and looper operating devices, the space separating the twomechanisms heing exaggerated.

Briefly, the maehinedranie comprises a hollow horizontal angular casingA, from the rear end of the member A of which rises the gooseneck A",being the l'orward case member. At the left-hand end of the case memberA rises the hollow post A, from the upper end of which projects therearwardlyextending cylindrical bed-plate or horn A parallel with thecase member, but in a higher plane.

The upper tension.mechanism, the i'ieedlebar N, the needle-clamp it, itsoperatinglever, the presser-foot l, and presser-bar-I are of usualconstruction and need not he Specification of Letters Patent.

Applicatiomfiled May 21, "1901. Serial No. 61,271.

further described.

Patented. Dec. 18,1906

ed the looper-operating lever L, which at its upper end is connected inthe manner shown to the sliding and locking looper-shaft L carrying onits outer end the lcopers Z this looper-operatmg lever having a pivotalconnection with the sliding and oscillating loopershaft and also havinga sliding pivotal eonnection with a bearing'- block pivoted to a fixedpart of the inachine-frame. These parts do not form a part of thepresent invention, but are claimed in an application filed by me of evendate herewith.

F designates the four-motion feed-bar mounted in bearing-blocks oruideways f within the top of the cylindrica bed-plate A and carrying atits rear end the feed-dog F the teeth of which. project rearwardl oraway from theoperator, so as to fee work off the cylindrical bed-plateor horn. The feed-bar F. is pivotally connected at its rear or far endto vertieally-disposed links f f, pivoted at their lower ends in-thelower portion of the bed-plate or horn A, and the near or front end ofthe feed-hart. e., the endnearest the cperatoris pivotallyconnected tothe upper forked end 7 of the main lever F the lower end of said leverbeing strapped to the larger eccentric d o'n'the Ihe lever F is furtheracted. upon shaft l).

the-

by the auxiliary lever F forked at its lower end f to straddle thesmaller eccentric d of the shaft D and split thereahove, as at andhaving a tightening-screwf to regu at; the space between the forks. Thislever F is pivoted at its upper end to the ri ht side of the lever F? bya pivot-screw f (s own in dotted lines, Fig. 3,) and the lever F isfurther provided between its ends with a longitudinal fulcrumslotf,through WilCll asses I the cider-god rounded portion of i re r'ucrumholt'f, having a flattened treaded end mounted adjustably in aninclined vertically bar-operating lever near the upper end theredisposedslot a in the post A (See Fig. 3.) l of substantially as described.

Byadjusting this bolt f the throw of the feed-bar may be lengthened orshortened to vary the stitch.

It Will be seen that the main lever F effects the raising and lowering..of the front end of the feed-bar and also raises the lever F and thatin the further rotation of the eccentrics d d" the auxiliary lever Fwill be rocked on its axis f so as to rock the main lever and impart thenecessary longitudinal movement to the feed-bar F. The auxiliary lever Fforms, therefore, a sliding and oscillating pivot for the lever f Havmgthus described my invention, What I claim as new, and desire to secureby Letters Patent, is-

1. A feeding vmechanism for sewing-machines, comprising a driving shaft,and means for rotating the same, eccentrics on said shaft, alongitudinally-extending feedbar, a feed-dog thereon, avertically-disposed feed-bar-operating lever connected at its lower endto one of said eccent ic-s, and extending into pivotal connection withthe adjacent end of said feed-bar slidingly pivoted between its ends toa stationary part of the machine-frame, an auxiliary lever connected atits lower end to the other of said eccentries, and pivotally connectedat its upper end to the main-feed-bar-operating lever near the upper endthereof; substantially as described.

2 The combination, with the angular casing comprising forward lowerhorizontal ease member, the vertical member and the rearwardly-extendinghorn projecting from the u per end of said vertical member, of a line-Sli aft in said forward case member, means for rotating said shaft,eccentrics on the end of said shaft, within the lower end of saidvertical case member, a feed-bar extending longitudinally in the hornand provided at its rear end with a feed-dog, a vertically-disposedfeed-bar-operating lever connected at its lower end to one of saideccentrics, and

upwardly through the vertical case member into pivotal connection withthe adjacent end of said feed-bar, slidingly pivoted between its ends inthe vertical casing member, an auxiliary lever, connected at its lowerend to the other of said eccentrics, and pivotallv connected at itsupper end to the maind'ced- 3. The combination with the angular casmg,comprising the forward lower horizontal member, a vertical member havinga slot,

. and the rearwardly-extcmling horn projecting from the upper end ofsaid vertical member, of a line-shaft in said forward case member, meansfor rotating said sh aft, eccentrics on one end of the line-shaft withinthe lower end of said vertical case member, a feed-bar extendinglongitudinally in the horn, and provided at its rear end with afeed-dog, a link pivoted at its lower end in the horn, and pivoted atits upper end to the feed-bar between the ends thereof, a\ertically-disposed feed-bar-operating lever in the vertical casemember, and connected at its lower end to one of said eccentrics, and atits upper end pivotally connected to the adjacent end of the fecdbar, anauxiliary lever, connected at its lower end to the other of saideccentrics pivotally connected at its upper end to the feed-dogoperatinglever near the upper end thereof, and slotted hmgitudinallv between itsends, and a fulcrum-bolt having a rounded portion extending through theslot in the auxiliary lever and a squaredportion adjustable in the slotin the vertical case member: substantiall as described.

i A feeding mechanism for sewing-nun chines, comprising a driving-shaft.and means for rotating the same, eccmltrics on said shaft, :1-longitutlinally-extcnding icedbar, a feed-dog thereon, a verticallv-dismscd feedbar-operating lever connected at. its lower end to one of saideccentrics, and ox tending into pivotal connection with the adjacent endof said feed-bar slidingl pivoted between its ends to a stationary partof the machine-frame, an auxiliary lever connected at its lower end tothe other of said ccccn tries, and pivotali} connected at its upper endto the main-feed-lair-operating lcvcr near the upper end thereof, apivotal support for said auxiliary lover and means for adjusting saidpivotal support on the machinc-framc; substantiallv as described.

in testimony whereof l atlix my signal-Cure in presence of twowitnesses.

lJANSlNG ()NDEHUONK. Witnesses:

F. A. Non'rn, M. VAN lllxoxnn.

